Lee R. Berger and Marc Aronson, "The Skull in the Rock: How a Scientist, a Boy, and Google Earth Opened a New Window on Human Origins." Washington, DC: National Geographic Children’s Books, 2012.
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Lee R. Berger and Marc Aronson, "The Skull in the Rock: How a Scientist, a Boy, and Google Earth Opened a New Window on Human Origins." Washington, DC: National Geographic Children’s Books, 2012.